CN203983090U - Plum blossom contact for switching fastening spring rapid installation device - Google Patents

Abstract

A quick installation device for the clamping spring of a switch plum blossom contact, which is composed of a spring installation connector and a spring pusher. The spring installation connector includes a frustum-shaped cylinder and a small section of cylinder. At the large end, the diameter of the cylinder is slightly larger than the diameter of the switch plum blossom contact, which can be sleeved on the plum blossom contact. The diameter of the small diameter end of the frustum-shaped cylinder is smaller than the inner ring of the clamping spring; the spring propulsion device is composed of a connecting support plate and a uniform It is composed of slightly elastic spring push claws fixed on one edge of the connection support plate, the diameter of the connection support plate is slightly smaller than the diameter of the cylinder, and the lower end of the spring push claw is provided with a small pressure plate that is everted. Its positive effects are: simple structure, easy manufacture, low cost, safe operation, and easy to carry; it can be operated by a single person, and the spring will not be deformed, broken or scarred, and the spring will not cause danger by bouncing, and will not cause damage Injury to the operator's fingers; the installation effect is good, beautiful, and the installation efficiency is extremely high.

Description

Quick installation device for clamping spring of switch plum blossom contact

technical field

The utility model relates to a fast installation device for a clamping spring of a switch plum blossom contact used in an electric power system.

Background technique

At present, in the power system, most of the 10kV switchgears in power plants or substations (stations) are KYN series central cabinets. This kind of switchgear can meet the requirements of GB3906, IEC298 and other standards, and has the ability to prevent Misoperation of the circuit breaker, prevention of load-carrying switch, prevention of electrified closing of the grounding switch, prevention of power transmission when the grounding switch is in the grounding position, and prevention of mistaken entry into the electrified interval and other "five prevention" functions. Most of the switch cabinets are equipped with trolley switches. The trolley switches can be moved out of the switch cabinet. The contacts on this switch are plum-shaped contacts. Such contacts are in good contact with the switch cabinet body. prone to overheating. The plum blossom contact includes a contact piece, a support frame, a clamping spring, and a spring contact finger. The contact between the plum blossom contact and the switch body and the static contact is directly related to the clamping spring, but if the plum blossom contact contacts the static contact No, it is easy to cause overheating. If you want to eliminate overheating, you must rely on the clamping spring. The clamping spring is installed on the outer ring of the plum blossom contact, so that one section of the plum blossom contact is fixed on the trolley switch, and the other section makes the plum blossom contact and the moving contact Good contact. Since the current 10kV load is too heavy, and it has been operating under full load or overload for many years, it is inevitable that the contacts will burn out, which requires replacement of the plum blossom contacts.

When the clamping spring is not in use, it is a linear spring. When in use, it is rolled into a circle head and the head is hung firmly and then fixed on the plum blossom contact. The traditional and old method of installing the clamping spring of the plum blossom contact is: 1) At least three people are required. Since the clamping spring is very elastic, person A holds the plum blossom contact, and person B makes the clamping spring wind around the plum blossom contact. Clamp the two heads of the linear spring with two needle-nose pliers or a screwdriver, make them close together and hang them together; 2) Uneven or excessive force when installing the clamping spring will easily cause the spring to have 3), if the spring is not grasped firmly during installation, the spring will bounce and hurt the staff; 4), if the tool is used carelessly during installation, it is easy to hurt the installer's hands; 5), if the installation is not good or not If it is in place, it is easy to cause poor contact of contacts and switches, resulting in overheating; 6), the installation takes a long time, and the power outage time is increased.

Contents of the invention

In order to overcome the above-mentioned difficulties, the utility model provides a quick installation device for the clamping spring of the switch tulip contact, which can be used to quickly install any switch tulip contact clamping spring conveniently and safely.

The technical solution adopted to solve the problems of the utility model is: it is composed of a spring installation connector and a spring propulsion device. The barrel is connected to the end with a large diameter of the frustum-shaped barrel. The diameter of the barrel is slightly larger than the diameter of the switch plum contact, which can be set on the plum contact. The diameter of the small-diameter end of the cone-shaped barrel is smaller than the inner diameter of the clamp spring The spring propulsion device consists of a connecting support plate and a slightly elastic spring push claw evenly fixed on one edge of the connecting support plate. The diameter of the connecting support plate is slightly smaller than the diameter of the cylinder. .

The spring push claw is a strip plate with a width of 10-15mm, and a vertical seam with a length of 10-15mm is opened in the middle of the lower end. The lower end is divided into two parts, and one of them is turned into a small pressure plate. 90 degrees, sharpen and smooth the lower end of the other piece to become a small fixed card.

The positive effects of the utility model are: simple structure, easy manufacture, low cost, safe operation, easy to carry; a single person can operate, the spring will not be deformed, disconnected or caused scars, and the spring will not cause danger due to bouncing. It will not cause injury to the operator's fingers; the installation effect is good, beautiful, and the installation efficiency is extremely high.

Description of drawings

Accompanying drawing 1 is the schematic diagram of the use state of the utility model; Accompanying drawing 2 is the schematic diagram of the spring installation connector of the utility model; Accompanying drawing 3 is the schematic diagram of the spring propulsion device of the utility model; Accompanying drawing 4 is the enlarged view of the lower end of the spring push claw of the utility model .

Detailed ways

The utility model is shown in accompanying drawings 1, 2, and 3. It is composed of a spring installation connector (shown in Figure 2) and a spring propulsion device (shown in Figure 3), and can be designed into various models according to needs, so that Suitable for different types of switches. The spring mounting connector (Fig. 2) consists of a frustum-shaped cylinder 2 made of hard material and a small section of cylinder 6. The cylinder 6 is connected to the end with a larger diameter of the frustum-shaped cylinder 2. The diameter of the cylinder 6 is larger than that of the switch. The diameter of the plum blossom contact is slightly larger, the length is 50mm, and it can be sleeved on the plum blossom contact. The diameter of the small diameter end of the frustum-shaped cylinder 2 is smaller than the inner ring of the plum blossom contact clamping spring 5; the spring propulsion device (Figure 3) is connected by The support plate 1 and four slightly elastic spring push claws 3 uniformly fixed on the edge of the connection support plate 1 are composed of the diameter of the connection support plate 1 is slightly smaller than the diameter of the cylinder 6, and the spring push claw 3 is a strip-shaped steel plate with a width of 15mm , open a 15mm vertical slit in the middle of the lower end, divide the lower end into two, turn one of them into a small pressure plate 4, the angle of eversion is not greater than 90 degrees, and sharpen and polish the lower end of the other piece to become smooth A small fixed card 7 (shown in Figure 4).

The specific operation steps are: the staff can select a suitable fast installation device for the clamping spring of the plum blossom contact according to the rated capacity of the switch contact, that is, the size of the plum blossom contact. First roll the plum blossom contact clamping spring 5 that needs to be installed into a circle and hang both ends firmly, insert it from the small end of the spring installation connector (Figure 2) on the frustum-shaped cylinder 2, and then push the spring into the device (Figure 3) The four spring push claws 3 are also set on the frustum-shaped cylinder 2 on the spring installation connector, and the small fixing clip 7 at the lower end of the spring push claw 3 is close to the frustum-shaped cylinder 2 of the spring installation connector , insert the inner side of the plum blossom contact clamping spring 5, the small pressure plate 4 next to the small fixed card 7 at the lower end of the spring push claw 3 presses the spring coil (as shown in Figure 1), the operator pushes the spring propulsion device (Figure 3), and the plum blossom contact The head clamping spring 5 is pushed onto the cylinder 6 at the end of the spring installation connector and stays there, and multiple plum blossom contact clamping springs 5 can be pushed forward and stay on the cylinder 6 in turn. Then put the cylinder 6 at the end of the spring installation connector on the plum blossom contact, continue to push the spring pushing device, that is, push the plum blossom contact clamping spring 5 onto the plum blossom contact, and complete the installation.

Claims (2)

1. a plum blossom contact for switching fastening spring rapid installation device, it is characterized in that: it is comprised of spring fitting connector and spring-advance device two parts, spring fitting connector comprises a taper type cylindrical shell and a bit of cylinder of being made by hard material, cylinder is connected to one end that taper type barrel diameter is large, drum diameter is than plum blossom contact for switching slightly larger in diameter, can be enclosed within on Mume flower contact, one end diameter that taper type barrel diameter is little is less than the inner ring of Mume flower contact fastening spring; Spring-advance device connects on edge of supporting bracket slightly flexible spring and pawls and form by connecting supporting bracket and being evenly fixed on, and connects supporting bracket diameter and is slightly less than drum diameter, and the spring lower end of pawling is provided with a little pressing plate turning up.

2. plum blossom contact for switching fastening spring rapid installation device according to claim 1, it is characterized in that: it is the stripe board of a wide 10-15mm that spring is pawled, in the middle of lower end, open the seam of a long 10-15mm vertical direction, lower end is divided into two, a slice is wherein translated into little pressing plate outward, valgus angle is not more than 90 degree, by another sheet lower end sharpening and polish smooth and become a little fixed card.